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MAX8743ETX from MAXIM,MAXIM - Dallas Semiconductor

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MAX8743ETX

Manufacturer: MAXIM, MAX

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown

Partnumber Manufacturer Quantity Availability
MAX8743ETX MAXIM, MAX 228 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown The MAX8743ETX is a voltage regulator IC manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX8743ETX  
- **Package:** 36-Pin TQFN (Thin Quad Flat No-Lead)  
- **Input Voltage Range:** 4.5V to 24V  
- **Output Voltage Range:** Adjustable (0.7V to 5.5V)  
- **Output Current:** Up to 7A  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX8743ETX is a high-efficiency, synchronous step-down DC-DC converter designed for applications requiring high output current. It integrates power MOSFETs and supports adjustable output voltage with high accuracy. The device is optimized for low EMI and high efficiency, making it suitable for power supplies in computing, networking, and industrial applications.

### **Features:**
- **Integrated Power MOSFETs** – Reduces external component count.  
- **Adjustable Output Voltage** – Supports a wide range of applications.  
- **High Efficiency** – Up to 95% efficiency with synchronous rectification.  
- **Adjustable Switching Frequency** – Allows optimization for noise or efficiency.  
- **Soft-Start Function** – Prevents inrush current at startup.  
- **Overcurrent and Overtemperature Protection** – Enhances system reliability.  
- **Low-Dropout Operation** – Maintains regulation even with low input-to-output differential.  
- **Power-Good Output** – Provides system monitoring capability.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown

Alternative Part Number

  • TPS51124RGER --: Dual synchronous buck controller with similar dual-output architecture and voltage range, commonly used as a MAX8743 substitute in notebook power designs.
  • ISL6237IRZ --: Dual-channel step-down controller with comparable input voltage and current-mode control, suitable for the same notebook rail applications.
  • RT8205BGQW --: Dual synchronous buck controller offering similar functionality and package footprint, widely used as a drop-in alternative in portable power systems.
  • RT8205LZQW --: Dual synchronous buck controller targeting notebook CPU/chipset rails, pin-function compatible with MAX8743 class designs and widely available.

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